public class Test1 {
    public static void main1(String[] args) {
        String str = "123";
        int val =Integer.parseInt(str);
        System.out.println(val+1);

        int a = 456;
        String str2 =String.valueOf(a);
        System.out.println(str2);

        String str3 = a+"";
        System.out.println(str3);

        String str4 = Integer.toString(a);
        System.out.println(str4);

    }
}
